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<script>
    let add = (a, b, c) => a + b + c
    function currying(fn) {
        return function judge(...args) {
            return args.length === fn.length ? fn(...args) : (...arg) => judge(...args, ...arg)
        }
    }
    let curryingAdd = currying(add)
    console.log(curryingAdd(1, 2,3))
</script>

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